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Elden [556K]
3 years ago
14

Two ways in xylem is modified to carry out its function

Biology
1 answer:
Bess [88]3 years ago
3 0
1. The cell wall has lignin (hard substance): to prevent the xylem vessel from collapsing and withstand high pressure.
2. The absence of protoplasm (nucleus + cytoplasm) and cross wall: to allow water to move through the lumen easily.

Hope it helped!
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what is the meaning of phosphoryl transfer potential and what does it mean to have a high or low phosphoryl transfer potential?
makvit [3.9K]

Phosphoryl-transfer potential is the ability of an organic molecule to transfer its terminal phosphoryl group to water which is an acceptor molecule. It is the “standard free energy of hydrolysis”.

Explanation:

This potential plays a key role during cellular energy transformation by energy coupling during ATP hydrolysis.  

A compound with a high phosphoryl-transfer potential has the increased ability to couple the carbon oxidation with ATP synthesis and can accelerate cellular energy transformation.  

A compound with a high phosphoryl-transfer potential can readily donate its terminal phosphate group; whereas, a compound with a low has a lesser ability to donate its phosphate group.

ATP molecules have a high phosphoryl transfer potential due to its structure, resonance stabilization, high entropy, electrostatic repulsion and stabilization by hydration. Compounds like creatine phosphate, phosphoenolpyruvate also have high phosphoryl-transfer potential.

8 0
3 years ago
How does the heart deliver oxygen to the body cells
mario62 [17]
Well its a little deeper than that. The oxygen transport is made through Hemoglobin (red blood cells) which is pumped from the heart
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3 years ago
The cells that form from the first few divisions of a fertilized egg cell can
bogdanovich [222]

Answer:

The correct answer is D

Explanation:

8 0
3 years ago
During anaerobic respiration food molecules are _____________ oxidised, while during aerobic respiration they are ______________
monitta
Respiration using oxygen to break down food molecules is called aerobic respiration. 'Aero' means air, which contains oxygen, leading to the name aerobic respiration. Glucose is the molecule normally used for respiration - it is the main respiratory substrate. Glucose is oxidised to release its energy, which is then stored in ATP molecules.

The word equation for aerobic respiration is:

glucose + oxygen → carbon dioxide + water (+ ATP made)

You need to be able to recognise the chemical formulas:

C6H12O6 + 6O2 → 6CO2 + 6H2O
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What is unusual about organisms in the domain Archaea?
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1- They live in extreme environmental condition

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